FIG 4. A and B, ROC curves for the two observers (A and B, respectively) when attempting to detect sinus thrombosis on images obtained with 3D contrast-enhanced MR-RAGE (MP-RAGE: 13.5/7/1, TI = 300, flip angle = 15°), 2D-TOF MR venography (2D-TOF: 25/9/1, flip angle = 30°), T1-weighted imaging (T1WI: 600–700/14–24/1), T2-weighted imaging (T2WI: 3700/96/1), and contrast-enhanced T1-weighted imaging (Gd-T1WI: 600–700/14–24/1). The 3D contrast-enhanced MP-RAGE sequence yielded statistically better detection of sinus thrombosis by both observers as compared with 2D-TOF MR imaging (P < .01), T1-weighted imaging, T2-weighted imaging, and contrast-enhanced T1-weighted imaging (P < .01)